Wave Filters Including Long Line Elements Patents (Class 333/202)
  • Patent number: 11355838
    Abstract: A packaged radar includes laminate layers, a ground plane associated with at least one of the laminate layers, a transmit antenna and a receive antenna associated with at least one of the laminate layers, and an electromagnetic band gap structure between the transmit antenna and the receive antenna for isolating the transmit antenna and the receive antenna, the electromagnetic band gap structure including elementary cells forming adjacent columns each coupled to the ground plane, and each elementary cell including a conductive planar element and a columnar element coupled to the conductive planar element.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: June 7, 2022
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Ashutosh Baheti, Marwa Abdel-Aziz, Mustafa Dogan, Muhammad Tayyab Qureshi, Saverio Trotta, Maciej Wojnowski
  • Patent number: 11316265
    Abstract: A shielding apparatus which is for passively attenuating electromagnetic radiation and which comprises a plurality of cells. Each cell comprises a plurality of resonators (26) which are spaced from one another. The cells are arranged in a plurality of unit cells with each unit cell comprising a common loop (32) which surrounds at least two adjacent cells of the plurality of cells. The plurality of unit cells each have an asymmetric structure. The shielding apparatus thus has a negative refractive index for at least one selected frequency whereby electromagnetic radiation at the at least one selected frequency is passively attenuated.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: April 26, 2022
    Assignee: SarGard Limited
    Inventors: James Noras, Rameez Asif, Richard Littlehales, Raed Abd-Alhameed
  • Patent number: 11309682
    Abstract: The present disclosure provides a millimeter wave LTCC filter including system ground layers and metalized vias; two first perturbation metallized vias provided in a first substrate integrated waveguide unit and two second perturbation metallized vias provided in a second substrate integrated waveguide unit; the two first perturbation metallized vias are symmetrically provided on a first diagonal of the first closed resonant cavity with respect to a geometric center of the first closed resonant cavity; the two second perturbation metallized vias are symmetrically provided on a second diagonal of the second closed resonant cavity with respect to a geometric center of the second closed resonant cavity, and the first diagonal and the second diagonal are orthogonal to each other; a first port and a second port. Compared with the related art, the millimeter wave LTCC filter of the present disclosure is small in volume, large in bandwidth, and low in loss.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: April 19, 2022
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Zhimin Zhu, Jianchun Mai
  • Patent number: 11296393
    Abstract: The present disclosure provides a filter comprises an enclosure having two cavities separated by a wall; a first TM dual-mode resonator and a second TM dual-mode resonator, each TM dual-mode resonator having two modes and comprising a body having a central portion with a plurality of arms extending outwardly from the central portion; a gradient aperture formed in the wall for coupling between two TM dual-mode resonators. The filter is capable of forming two transmission zeros between four resonances modes.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 5, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Xiaoliang Zhang
  • Patent number: 11289789
    Abstract: A six-pole patch bandpass filter includes a dielectric substrate and six electrically-conductive isosceles-triangle patches disposed thereon. A first pair of the patches is an electrically connected pair. The first pair of patches is capacitively coupled to a first microstrip. A second pair of the patches is also an electrically connected pair. The second pair of patches is capacitively coupled to a second microstrip. A third pair of the patches are nested between and capacitively coupled to the first pair of patches and the second pair of patches.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: March 29, 2022
    Assignee: United States of America as represented by the Administrator of NASA
    Inventor: Berhanu T. Bulcha
  • Patent number: 11276907
    Abstract: Apparatus comprising a first layer of electrically conductive material, a second layer of electrically conductive material, and at least one dielectric layer, which comprises a solid dielectric material, arranged between said first layer and said second layer, wherein at least one distributed resonator structure comprising a plurality of resonator posts is arranged in said at least one dielectric layer.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: March 15, 2022
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Florian Pivit, Senad Bulja
  • Patent number: 11264690
    Abstract: The present disclosure relates to a tunable waveguide resonator comprising a rectangular waveguide part having electrically conducting inner walls, a first waveguide port and a second waveguide port. The resonator comprises at least one tuning element positioned between the waveguide ports, where each tuning element comprises an electrically conducting body and a holding rod. The holding rod is attached to the electrically conducting body and is movable from the outside of the resonator such that the electrically conducting body can be moved between a plurality of positions within the waveguide part by means of the holding rod.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: March 1, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anatoli Deleniv, Ove Persson
  • Patent number: 11264686
    Abstract: This disclosure describes a dielectric filter and a communications device. In one example, the dielectric filter includes at least two dielectric resonators, a first through-hole is disposed between at least one pair of adjacent dielectric resonators, and the first through-hole is configured to cut a magnetic field between the at least one pair of adjacent dielectric resonators. In some implementations, a magnetic field distribution in the dielectric filter may be cut via the first through-hole, so that a magnetic field distribution area is reduced, and a high-order harmonic wave frequency can be increased, thereby improving a remote suppression capability and meeting the specification requirements.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: March 1, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zheng Cui, Dan Liang
  • Patent number: 11239546
    Abstract: Multiple feed, front-shielded, coplanar waveguide, direct-fed, cavity-backed slot antennas are described. Various implementations form an antenna unit capable of millimeter waveform and/or microwave waveform transmissions. An antenna comprises a conductive plate that includes an aperture. The aperture has a shape that extends along an axis that bisects the aperture into first and second bisected portions, the first bisected portion having a first geometry type, and the second portion having a second geometry type that is a bilateral symmetry shape type of the first geometry type. In implementations, the aperture is configured to radiate waveforms within a frequency range from about between 600 Megahertz (MHz) to 72 Gigahertz (GHz) by applying multiple signal feeds to the conductive plate.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 1, 2022
    Assignee: Motorola Mobility LLC
    Inventors: Junsheng Zhao, Eric Le Roy Krenz, Hugh Smith
  • Patent number: 11233302
    Abstract: Provided is a noise filter device that is capable of suppressing electrical interference between an input-side conductive line and an output-side conductive line. A noise filter device (10) includes: a noise filter (50) connected to a distal end of an input-side conductive line (41) and a distal end of an output-side conductive line (42); and a holding member (60) that holds the input-side conductive line (41) and the output-side conductive line (42). The holding member (60) includes: a body (61) attached to a wire harness (WH) so as to surround an outer circumference thereof; and a pair of hooks (62) that are respectively formed at two ends of the body (61) in a circumferential direction thereof, and are hooked on the input-side conductive line (41) and the output-side conductive line (42) to restrict the input-side conductive line (41) and the output-side conductive line (42) from approaching each other.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: January 25, 2022
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takeshi Aizawa, Asato Hibino
  • Patent number: 11211676
    Abstract: A multi-resonator filter has a signal input terminal, a signal output terminal, and a plurality of resonator components. The plurality of resonator components include an input resonator component coupled to the signal input terminal, an output resonator component coupled to the signal output terminal, and at least one intermediate resonator component coupled between the input resonator component and the output resonator component. The input resonator component, output resonator component and the at least one intermediate resonator component are arranged in a sequence to define a signal path between the signal input terminal and the signal output terminal. The at least one intermediate resonator component includes at least one multiple resonator component, where each multiple resonator component includes a pair of individual resonators coupled in parallel where each individual resonator in a given pair of individual resonators has the same resonant frequency.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: December 28, 2021
    Assignee: COM DEV Ltd.
    Inventors: Zhifu Zhou, Ming Yu
  • Patent number: 11189770
    Abstract: A new method, system and apparatus for mounting mechanically, thermally and electrically light emitting diode (LED), crystals, arrays or packages. The above provides an LED assembly having reduced number of components and costs, superior heat dissipation, mechanical properties and a compact structure. The use of a grid or mesh allows for more efficient and inexpensive removal of heat from one or more LEDs within an LED fixture.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: November 30, 2021
    Inventors: Andrey Zykin, Alcinda Miller, Stephen Miller
  • Patent number: 11189896
    Abstract: The present invention is a tunable bandpass filter to provide a constant absolute bandwidth across a tuning range, comprising of a pair of resonators to determine a filter center frequency, each said resonator has a rectangular waveguide cavity, wherein said filter center frequency depends on the dimensions of said rectangular waveguide cavity; a pair of side walls attached to said pair of resonators to form a filter housing; a tuning element movably attached to at least one of said pair of side walls and extending in said filter housing and movable orthogonally to said pair of resonators, and wherein said dimensions of said rectangular waveguide cavity change by moving said tuning element, thereby said filter center frequency is changed.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 30, 2021
    Inventors: Gowrish Basavarajappa, Raafat R. Mansour
  • Patent number: 11183985
    Abstract: An inductive-capacitive filter includes a first insulating-conductive strip wound around a winding axis, where the first insulating-conductive strip includes a first conductive strip joined with a first insulating strip. An inductive-capacitive filter assembly includes a first and a second insulating-conductive strip concentrically wound around a winding axis, the first insulating-conductive strip including a first conductive strip joined with a first insulating strip, and the second insulating-conductive strip including a second conductive strip joined with a second insulating strip.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: November 23, 2021
    Assignee: WJLP COMPANY INC.
    Inventors: Weyman John Lundquist, Mary Elizabeth Clark
  • Patent number: 11171397
    Abstract: This application provides a dielectric resonator, including a dielectric body disposed in a hollow conductive housing, where the dielectric body includes a first end face and a second end face that are disposed opposite to each other and a circumferential surface connected between the first end face and the second end face. The first end face is provided with a first groove, the second end face is provided with a second groove, the first end face and the second end face are in contact with an inner wall of the conductive housing, and extension directions of the first groove and the second groove are different. This application further provides a filter. This application can implement single-sided installation of the dielectric resonator, so that an objective of miniaturization is achieved and assembly becomes easy. In addition, coupling between resonance modes can be enhanced because the extension directions of the first groove and the second groove are different.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: November 9, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jing Shi, Guosheng Pu
  • Patent number: 11158919
    Abstract: An object of the present invention is to prevent or reduce an error between a center frequency and a target center frequency in a coupled resonator band-pass filter which uses a post-wall waveguide. A band-pass filter (1) includes: a substrate (2) made of a dielectric substrate and sandwiched by a pair of conductor layers (3 and 4); and a post wall (11, 12) constituted by a plurality of conductor posts (11i, 12i) which pass through the substrate (2) and short-circuit the pair of conductor layers (3 and 4), the pair of conductor layers (3 and 4) and the post wall (11, 12) constituting a plurality of resonators (22 to 24) which are coupled, the pair of conductor layers serving as a pair of wide walls of the plurality of resonators, the post wall serving as a narrow wall of the plurality of resonator.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: October 26, 2021
    Assignee: FUJIKURA LTD.
    Inventor: Yusuke Uemichi
  • Patent number: 11145945
    Abstract: A dielectric filter includes a plurality of resonators, wherein each resonator included in the plurality of resonators includes a tuning hole; and at least one stepped hole for adjusting capacitive coupling, wherein the at least one stepped hole is disposed between two adjacent resonators included in the plurality of the resonators, wherein the stepped hole comprises a large hole and a small through hole at a bottom center of the large hole, wherein a first sidewall and a first annular bottom of the large hole are configured with a metal conductive layer, and wherein at least one of a second sidewall of the small through hole and a second annular portion outside a bottom of the small through hole is not covered with the conductive layer.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: October 12, 2021
    Inventors: Rongbiao Su, Zhou Chen, Ruoming Wang
  • Patent number: 11139546
    Abstract: Example dielectric filters, transceiver devices, and base stations are described. One example dielectric filter includes a dielectric block whose surface is covered with a metal layer. The dielectric block includes at least two resonant cavities, and is provided with a via hole. The via hole is located between two adjacent resonant cavities, and an inner wall of the via hole is covered with a metal layer. A first partition ring is disposed on the surface of the dielectric block and is surrounding at least one opening of the via hole. The dielectric block is exposed in an area enclosed by an inner edge of the first partition ring and an outer edge of the first partition ring.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: October 5, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Tao Jiang, Jiyong Guo
  • Patent number: 11108143
    Abstract: An antenna including a dielectric block with a groove, and a conductor arranged in the groove. The antenna is arranged to be excited to operate as a dielectric resonator antenna and a Fabry-Perot resonator antenna.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: August 31, 2021
    Assignee: City University of Hong Kong
    Inventors: Kwok Wa Leung, Li Ying Feng
  • Patent number: 11108121
    Abstract: A cavity-type radio frequency filter is disclosed. the radio frequency filter having a cavity structure including an enclosure, a resonant element, a cover, a frequency tuning screw, and a resilient fixing member. The enclosure has a hollow inside and an open surface on one side to have a cavity. The resonant element is positioned in the hollow of the enclosure. The cover has a screw hole having a preset diameter at a position corresponding to the resonant element, and is configured to seal the open surface of the enclosure. The frequency tuning screw is configured to be screwed into the screw hole of the cover, and it has an upper end formed at least partially with a latching abutment that protrudes outwardly.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 31, 2021
    Assignee: KMW INC.
    Inventors: Joung-Hoe Kim, Sung-Ho Jang
  • Patent number: 11095010
    Abstract: A filter circuit may include a transmission line, a quarter wave resonator, and an electrical component coupled in series with the quarter wave resonator at a first end and to the transmission line at a second end. The electrical component may be have a frequency dependent impedance. The electrical component may be an inductor, a capacitor, or an inductor in series with a capacitor. In another aspect, a filter circuit may include a transmission line, a first quarter wave resonator coupled to a first electrical component and a second quarter wave resonator coupled to a second electrical component. Each of the first and second electrical components may be coupled to the transmission line in parallel with each other. The first and the second electrical components may have a frequency dependent impedance. The first electrical component may be the same as or different from the second electrical component.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 17, 2021
    Assignee: TELEDYNE DEFENSE ELECTRONICS, LLC
    Inventor: Ray Kwok
  • Patent number: 11081801
    Abstract: A compact wideband RF antenna for incorporating into a planar substrate, such as a PCB, having at least one cavity with a radiating slot, and at least one transmission line resonator disposed within a cavity and coupled thereto. Additional embodiments provide stacked slot-coupled cavities and multiple coupled transmission-line resonators placed within a cavity. Applications to ultra-wideband systems and to millimeter-wave systems, as well as to dual and circular polarization antennas are disclosed. Further applications include configurations for an antenna based on a monopole element and having a radiation pattern that is approximately isotropic.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: August 3, 2021
    Assignee: VAYYAR IMAGING LTD.
    Inventors: Naftali Chayat, Doron Cohen
  • Patent number: 11081777
    Abstract: An antenna assembly and an antenna device including the same are provided. The antenna assembly includes antenna elements, a first printed circuit board (PCB), cavity filters, and a second PCB. The first PCB has one surface provided with the antenna elements. The cavity filters are installed on the other surface of the first PCB and electrically connected to the plurality of antenna elements. The second PCB has one surface electrically connected to the cavity filters and includes at least a power amplifier, digital processing circuit, and calibration network. The second PCB includes one or more first processing areas and one or more second processing areas extending in parallel with each other. The digital processing circuit is disposed in the second processing area and not in the first processing area. The power amplifier is disposed in the first processing area and not in the second processing area.
    Type: Grant
    Filed: September 28, 2019
    Date of Patent: August 3, 2021
    Assignee: KMW INC.
    Inventors: Duk Yong Kim, Bae Mook Jeong, Chang Woo Yoo
  • Patent number: 11018405
    Abstract: A dielectric resonator, a dielectric filter using the dielectric resonator, a transceiver, and a base station. The dielectric filter includes a body made of a solid-state dielectric material, where a plurality of indentations are disposed at a first surface of the body and where at least one of a hole or a groove is disposed between adjacent indentations of the plurality of indentations, and a conducting layer, wherein the first surface and other surfaces of the body, surfaces of the plurality of the indentations, and an interior of the at least one of the hole or the groove are covered with the conducting layer.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: May 25, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bengui Yuan, Qiang Wang
  • Patent number: 11016317
    Abstract: Reconfigurable non-reciprocal integrated-optics-based devices are disclosed. The non-reciprocal devices include: a phase-sensitive device, such as a microring waveguide; a magneto-optic layer; and an electromagnet. These elements are operatively coupled such that a magnetic field generated by current flow through the electromagnet gives rise to a non-reciprocal phase shift in the phase-sensitive device. The non-reciprocal phase shift leads to a difference in the way that a light signal travels in the forward and backward directions through one or more bus waveguides that are operatively coupled with the phase-sensitive element. The non-reciprocity is reversible by reversing the direction of drive current flow in the electromagnet, which enables the inter-port connectivity of the ports of these bus waveguides to be reconfigured based on the direction of the drive current flow. Examples of reconfigurable isolator and circulator embodiments are described.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 25, 2021
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: John E. Bowers, Paolo Pintus, Duanni Huang
  • Patent number: 10998603
    Abstract: The present disclosure relates to a radio frequency filter having a cavity structure, and including a housing having internally a hollow space and an open side to provide at least one cavity, at least one resonance element located in the hollow space of the housing, a cover configured to have at least one groove which is internally threaded, recessed at a predetermined diameter and depth at a position corresponding to the resonance element, and has a bottom portion that is thinner than other portions, and to close the open side of the housing, and at least one frequency tuning screw configured to threadedly mate with the groove of the cover. When the frequency tuning screw threadedly mates with the groove, a bottom surface of the groove is depressed by the frequency tuning screw toward the resonant element.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: May 4, 2021
    Assignee: KMW INC.
    Inventor: Joung-hoe Kim
  • Patent number: 10992263
    Abstract: A high frequency yttrium iron garnet oscillator is described that comprises a coplanar yttrium iron garnet resonator. The coplanar yttrium iron garnet resonator has an yttrium iron garnet sphere, a coplanar coupling structure and a coplanar waveguide. The coplanar coupling structure is integrated with the coplanar waveguide. The coplanar coupling structure is coupled to the yttrium iron garnet sphere. Further, a method of manufacturing a high frequency yttrium iron garnet oscillator is described.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: April 27, 2021
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Florian Huber
  • Patent number: 10964998
    Abstract: A multi-mode resonator includes: a housing having a cavity therein; and a plurality of resonance ribs which are arranged radially around a center of the cavity with a predetermined interval therebetween. Each of the plurality of resonance ribs includes a body having a lower end and an upper end. The lower end of each of the plurality of resonance ribs is fixed to a bottom surface of the housing, and the body of the each of the plurality of resonance ribs is bent so that the upper end of each of the plurality of resonance ribs points to the center of the cavity.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: March 30, 2021
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10957959
    Abstract: A band-pass filter includes first to sixth stage resonators. Each resonator includes a resonator conductor portion formed of a conductor line. The resonator conductor portion has a first end and a second end which are opposite ends of the conductor line. The resonator conductor portion of each of the first and sixth stage resonators includes a narrow portion, a first wide portion located between the narrow portion and the first end, and a second wide portion located between the narrow portion and the second end. Each of the first and sixth stage resonators is lower in unloaded Q than the other resonators.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 23, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10938082
    Abstract: An aperture coupled microstrip-to-waveguide transition (“ACMWT”) is disclosed that includes a plurality of dielectric layers forming a dielectric structure and an inner conductor formed within the dielectric structure. The plurality of dielectric layers includes a top dielectric layer that has a top surface. The (“ACMWT”) further includes a patch antenna element (“PAE”) formed on the top surface, a bottom conductor, an antenna slot within the PAE, a coupling element (“CE”) formed above the inner conductor and below the PAE, and a waveguide. The waveguide includes at least one waveguide wall and a waveguide backend, where the waveguide backend has a waveguide backend surface that's a portion of the top surface of the top dielectric layer and where the waveguide backend surface and the at least one waveguide wall form a waveguide cavity within the waveguide. The PAE is a conductor located within the waveguide cavity at the waveguide backend surface.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 2, 2021
    Assignee: THE BOEING COMPANY
    Inventor: John E. Rogers
  • Patent number: 10930428
    Abstract: The disclosure relates to a compensation capacitor for an antenna of a magnetic resonance scanner and a corresponding antenna with a compensation capacitor. The compensation capacitor has a first electrode and a second electrode arranged in parallel. An insulation material configured to resist high voltages and a dielectric with low dielectric losses are arranged between the first and the second electrode. The second electrode and/or the dielectric may be moved relative to the first electrode such that a surface area of a projection of the surface of the first electrode along the surface normal of the first electrode to the surface of the second electrode and/or the dielectric is variable.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: February 23, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Ludwig Eberler, Razvan Lazar, Volker Matschl, Jürgen Nistler, Martin Schramm
  • Patent number: 10923831
    Abstract: A waveguide fed planar antenna array with enhanced circular polarization (“WFAECP”) is disclosed. The WFAECP includes a plurality of dielectric layers forming a dielectric structure, an inner conductor formed within the dielectric structure, a first patch antenna element (“PAE”), a second PAE, a bottom and top conductor, a conductive via in signal communication with the bottom and top conductor, a first and second antenna slot within the first PAE and second PAE, and a waveguide. The dielectric layers includes top and bottom dielectric layers, where the top dielectric layer includes a top surface and the bottom dielectric layer includes a bottom surface. The first PAE is formed on the top surface of the top dielectric layer and the second PAE is formed on the bottom surface of the bottom dielectric layer. The waveguide includes a waveguide wall, backend, and cavity. The second PAE is located within the waveguide cavity.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 16, 2021
    Assignee: THE BOEING COMPANY
    Inventor: John E. Rogers
  • Patent number: 10916853
    Abstract: A conformal antenna with enhanced circular polarization (“CAECP”) is disclosed. The CAECP includes a plurality of dielectric layers forming a dielectric structure, where a top dielectric layer, of the plurality of dielectric layers, includes a top surface. The CAECP further includes an inner conductor, a coupling element (“CE”), a patch antenna element (“PAE”), a bottom conductor, and an antenna slot. The inner conductor is formed within the dielectric structure, the CE is formed within the dielectric structure above the inner conductor, the PAE is formed on the top surface, and the antenna slot is formed within PAE. The PAE is a conductor and the CAECP is configured to support a transverse electromagnetic (“TEM”) signal within the dielectric structure.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 9, 2021
    Assignee: THE BOEING COMPANY
    Inventor: John E. Rogers
  • Patent number: 10903539
    Abstract: A dielectric resonator, a dielectric filter, a base station and a method for fabricating the dielectric resonator or the dielectric filter are provided. The dielectric resonator includes: a solid dielectric resonator body, a blind hole located on one side of the solid dielectric resonator body, a metalized layer covering both a surface of the solid dielectric resonator body and a surface of the blind hole, and a demetallized notch located at the metalized layer on the surface of the blind hole. The dielectric resonator provided in the present application can implement tuning of the dielectric resonator, and reduce impact on the resonance frequency of the dielectric resonator after the dielectric resonator is tuned, where the impact caused by that the demetallized notch is covered by a metal material in an assembly process of the dielectric resonator, and signal energy that is leaked from the notch is reduced.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: January 26, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bengui Yuan, Qiang Wang
  • Patent number: 10903540
    Abstract: A filter comprises a dielectric resonator element and a cylindrical waveguide cavity having a corrugated tube structure that surrounds the dielectric resonator element such that an outer encircling wall surface of the dielectric resonator element is in contact with an inner sidewall of the corrugated tube structure. The corrugated tube structure includes one or more spaced-apart corrugations configured to provide a spring-like action to controllably expand and contract the corrugated tube structure so that the dielectric resonator element can be controllably inserted and clamped within the cylindrical waveguide cavity. The geometry of the spaced-apart corrugations can be selected to define a rotationally asymmetric corrugated tube structure configured to split a plurality of fundamental modes of electromagnetic waves within the filter.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: January 26, 2021
    Assignee: Nokia Solutions and Networks Oy
    Inventor: David Hendry
  • Patent number: 10900919
    Abstract: An apparatus for perturbation method electrical permittivity measurements of a sample comprises a waveguide body having a first end, a second end, an upper wall, and a lower wall, a first shorting plug disposed within the waveguide body proximate the first end, a second shorting plug disposed within the waveguide body proximate the second end, a first threaded connector mount attached to the upper wall of the waveguide body at a first position along a length of the waveguide body, a second threaded connector mount attached to the upper wall of the waveguide body at a second position along a length of the waveguide body, and first and second apertures formed centrally in the upper wall and lower wall, respectively, of the waveguide body.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: January 26, 2021
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: John Christopher Deriso, Brian Christopher Eiker
  • Patent number: 10898843
    Abstract: An air filtration system is provided. The air filtration system embodies filtration material supported by a frame, wherein the air filtration system provides two framed filtration materials sandwiching a fabric filter. Such framework may be removably engaged through magnetic forces. The filtration material may hold and/or carry electrostatic forces and/or magnetostatic forces induced through a current from an electrical power source and/or magnetic forces of the magnetics.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 26, 2021
    Inventor: Samuel Stephen Grimes
  • Patent number: 10897090
    Abstract: In examples, systems and methods for waveguide antenna arrays with integrated filters are described. An example waveguide antenna array element a waveguide section has a first end and second end. The waveguide section is configured to propagate electromagnetic energy. The waveguide antenna array element also includes a feed configured to launch an electromagnetic wave into the first end of the waveguide section. The waveguide antenna array element also includes a waveguide filter having at least one waveguide cavity coupled to the second end of the waveguide section. The waveguide filter is configured to pass a first set of electromagnetic frequencies and reject a second set of electromagnetic frequencies. Yet further, the waveguide antenna array element includes an antenna coupled to the waveguide filter configured to radiate a portion of the electromagnetic energy passed by the waveguide filter.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: January 19, 2021
    Assignee: The Boeing Company
    Inventors: Julio A. Navarro, Paul C. Werntz, Philip R. Grajek, Paul J. Tatomir, James M. Barker, Xu Luo
  • Patent number: 10897808
    Abstract: A filter device includes a plurality of coils of which central axes are spaced apart from one another and in parallel to one another and a plurality of ground members spaced apart from one another and extending in parallel to the central axes of the coils outside of the coils. Each of the coils is spaced apart from another coil closest thereto by a first distance. Each of the ground members is spaced apart from a coil closest thereto by a second distance. The number of ground members spaced apart from each of the coils by the second distance is the same.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: January 19, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Nozomu Nagashima, Naohiko Okunishi
  • Patent number: 10879575
    Abstract: A method and apparatus for attenuating crosstalk between dielectric waveguides is provided. A first dielectric waveguide is formed to carry a first frequency band. A first filter is embedded within the first dielectric waveguide to attenuate transmission of a second frequency band through the first dielectric waveguide. The filter comprises alternating sections of a first dielectric material and a second dielectric material having different dielectric constants. The length of each section of the first and second dielectric materials is equal to a quarter of the wavelength of the central frequency of the second frequency band. A second waveguide is formed to carry the second frequency band. A second filter is embedded in the second dielectric waveguide to attenuate transmission of the first frequency band through the second dielectric waveguide. A cladding is disposed between the first and second waveguides.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: December 29, 2020
    Assignee: International Business Machines Corporation
    Inventors: Joshua Myers, Jose A. Hejase, Junyan Tang, Daniel M. Dreps
  • Patent number: 10862183
    Abstract: A quad-mode microwave or RF bandpass filter comprises a housing of a conductive material defining a cylindrical cavity and containing a cylindrical dielectric resonator defined by a parallel pair of face surfaces. The dielectric resonator is held within the housing between a pair of support plates of a dielectric material. Internal coupling elements are provided above and/or below the dielectric resonator for coupling between resonating modes. Further mode coupling elements are protruding into the housing.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 8, 2020
    Inventors: Kai Numssen, Jörn Pfeifer, Martin Lorenz, Christian Orlob, Christoph Neumaier, Natalie Spaeth
  • Patent number: 10855253
    Abstract: A circuit comprising: a passive reactive component; and an active circuit, the active circuit arranged to increase the ac voltage difference across the reactive component by changing the current at an input to the reactive component and the current at an output of the reactive component by equal and opposite amounts. By increasing the current on one side of the resonant circuit and decreasing the current on the other side of the resonant circuit, the amount of current flowing through the resonant circuit is increased and thus the ac voltage difference across the inductor of the LC resonant circuit is increased. The Q of an inductor (the ratio of its imaginary to real impedance) is increased. In a filter, the improved Q provides a sharp, high rejection notch and faster pass-band to stop-band roll-off, thus improving the frequency response of the circuit.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: December 1, 2020
    Assignee: Novelda AS
    Inventors: Sumit Bagga, Kristian Granhaug
  • Patent number: 10854939
    Abstract: A dielectric filter has a first input/output port, a second input/output port, an even number of dielectric resonators, and a capacitor for capacitively coupling the first input/output port and the second input/output port. The even number of dielectric resonators are provided between the first input/output port and the second input/output port in circuit configuration, and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10847861
    Abstract: A resonator includes a housing having a cavity therein; a plurality of resonance plates which are arranged radially around a center of the cavity with a predetermined interval therebetween; and a plurality of legs each of which supports one of the plurality of resonance plates, respectively. A center of each of the plurality of legs is deviated from a center of a corresponding resonance plate.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: November 24, 2020
    Assignee: KMW INC.
    Inventor: Nam-Shin Park
  • Patent number: 10826188
    Abstract: An electromagnetically reflective plate for a miniature antenna device includes: etched conductive elements on a first dielectric substrate layer; an apertured ground plane placed between the first substrate layer and a second dielectric substrate layer; a set of metal through-vias formed in the thickness of the two substrate layers, each including an upper end making contact with one of the conductive elements, a lower end reaching a lower face of the second substrate layer, and passing through the ground plane without electrical contact in one of its apertures. Each conductive element makes contact with a plurality of vias and each via of each conductive element is connectable to another via of a neighboring conductive element using a corresponding electrical connection making contact with the lower end of this via. At least some of the electrical connections include one or more meanders.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: November 3, 2020
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Nebil Kristou, Jean-Francois Pintos
  • Patent number: 10818989
    Abstract: A filter and a communications device are disclosed. The filter includes a metal cavity, a metal resonant cavity, and a metal cover covering the metal cavity and the metal resonant cavity. A dielectric waveguide is disposed in the metal cavity, and the dielectric waveguide is electrically connected to the metal cavity. Resonant rod is disposed in the metal resonant cavity. A coupling structure is disposed between the metal cavity and a metal resonant cavity that is neighboring to the metal cavity, the coupling structure includes a communication area between the metal cavity and the metal resonant cavity and a dielectric body that protrudes into the communication area, the dielectric body is connected to the dielectric waveguide, and the coupling structure is coupled to a resonant rod in the metal resonant cavity.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: October 27, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaofeng Zhang, Bengui Yuan
  • Patent number: 10811755
    Abstract: A microstrip capacitor structure includes a substrate having a first side and a second side opposite the first side wherein the first and second sides of the substrate are spaced apart in a vertical direction, first and second conductive microstrip transmission line segments on the first side of the substrate, a conductive ground plane on the second side of the substrate, first and second microstrip capacitor plates connected to respective ones of the first and second microstrip transmission line segments, wherein the first and second microstrip capacitor plates are separated by a dielectric gap, and a complementary resonator comprising a removed portion of the conductive ground plane that is aligned in the vertical direction with at least a portion of the dielectric gap.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 20, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Huafeng Su, Biyang Ding, Yongqiang Wang, Yi Zhang
  • Patent number: 10778174
    Abstract: Aspects of this disclosure relate to a band pass filter that includes LC resonant circuits coupled to each other by a capacitor. A bridge capacitor can be in parallel with series capacitors, in which the series capacitors include the capacitor coupled between the LC resonant circuits. The bridge capacitor can create a transmission zero at a frequency below the passband of the band pass filter. The LC resonant circuits can each include a surface mount capacitor and a conductive trace of the substrate, and an integrated passive device die can include the capacitor. Band pass filters disclosed herein can be relatively compact, provide relatively good out-of-band rejection, and relatively low loss.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: September 15, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: Hai H. Ta, Weimin Sun
  • Patent number: 10777869
    Abstract: The present invention relates to a cavity type wireless frequency filter having a cross-coupling notch structure, the filter comprising a notch substrate provided for cross-coupling between at least two resonance elements among a plurality of resonance elements, wherein the notch substrate comprises: a main substrate, which is made of a non-conductive material and has the first and second coupling structures mechanically coupled with at least two resonance elements, respectively; and a conductive line which is implemented by a conductive pattern formed on the main substrate and transfers a signal of a first resonance element to a second resonance element by using a non-contact coupling method.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: September 15, 2020
    Assignee: KMW INC.
    Inventors: Joung-Hoe Kim, Sung-Ho Jang
  • Patent number: 10763564
    Abstract: A cavity filter for low PIMD using hybrid cap bolts includes: a housing having therein a plurality of cavities partitioned by separation walls and an open upper portion; an upper plate coupled onto the upper portion of the housing and provided therein with a plurality of tuning bolts; a plurality of air blowing work holes formed respectively on the upper plate and outer sidewalls of the housing and corresponding to the plurality of cavities; and a plurality of hybrid cap bolts formed of different kinds of materials of metal and non-metal so as to have repulsive forces against and to be coupled to respective plurality of air blowing work holes. Thus, metal debris present inside a cavity housing are removed through an air blowing method by using an air blowing work hole formed in a cavity housing and a hybrid cap bolt for reducing PIMD.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: September 1, 2020
    Assignee: ACE TECHNOLOGIES CORPORATION
    Inventors: Jae Yong Koo, Sin Jae Kim, Se Young O, Sang Yong Lee